Surface modification of Y2O3 nanoparticles

被引：76

作者：

Traina, Christopher A. ^{[1
]}

Schwartz, Jeffrey ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

来源：

LANGMUIR | 2007年 / 23卷 / 18期

关键词：

D O I：

10.1021/la701653v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Rare earth ion-doped yttrium oxide (Y2O3) nanocrystals are nontoxic and can be prepared as upconversion materials for cellular imaging, but they do not suspend well in water. In contrast to their tendency to dissolve in acidic media, yttria (Y2O3) nanoparticles readily react with phosphonic acids to give phosphonate-bonded yttria particles. Through the choice of phosphonic acid, the hydrophilicity of the nanoparticles can be controlled. The synthesis of a novel tetraethylene glycol-derived phosphonic acid is described; yttria treated with the corresponding phosphonate is easily dispersed in aqueous media. The preparation of yttria bonded to a phosphonate that may be used for cross coupling with biomolecules is also described.

引用

页码：9158 / 9161

页数：4

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